Stone-dressing machine.



E. COLLINS.

STONE DRESSING MACHINE. APPLIOATION FILED DBO. 9, 1909. l989,122.Patented Apr. 11, 1911.

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E. COLLINS.

STONE DRESSING MACHINE. APBL'IOATION FILED was; 1009.

Patented Apr. 11, 1911.

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UNITED STATES PATEN T OFFICE.

EDWARD COLLINS, `0F BROOKLYN, NEW YORK.

i STONE-DRESSING MACHINE.

To allwhom it may concern:

Be i it `known `that I, EDWARD COLLINS, citizenof the United States, andresident of Brooklyn, in the county of `Kings and State of New York,have invented certain new and useful Improvements in 'Stone-Dressing.Machines, of which `the following is a specification.

invention relates to stone dressing machines, "and the object is toprovide means lforretaining the cutting medium upon the revolving disksor circular plates.

Another object is to `provide means for raising Cthestone operated uponwhen it is traveling backward and forward over the revolving disks.

Referring to the drawings Figure 1. is

a sidefelevation fof-a stone dressing machine embodying 'myimprovements. Fig. 2. is a topview ofthe same. Fig. 3, is a'detachedplan view of the retaining rim showing the attachments thereto,enlarged. Fig. 4, is a longitudinal section of the rim on line Fig.'3.1Fig.'5, iscross sectional view of the rim on line y, y, Fig. 3. Fig. 6,is another elevation-of a stone Adressing machine showing the `method bywhich the revolving disks a-re-magnetized, and fused in conjunction'withthe retaining rim. Fig. 7, is a longitudinal section of a modifiedformof the rim.

The rstone dressing "machine in this case comprises the frame4,\suitablybraced and supported Aon a bed plate 5. Within this 'frame revolve twodisks or plates 6 `and 7 in close proximity to each other, see Figs. 12. The faces 8'of these disks are each provided withfcurved grooves 9commencing from the vcenter ofthe disk and terminating at or near theouter edge of the same where they are suitably closed or'cut-ofi', seeFig. 2. The side walls of the grooves 9 may be made either'perpendicular orinclined inwardly, but preferably inclined inwardly. Thegrooves can be cut in the facesv of the disks or created by segments 9afastened on the top of the disks j at certain distances apart, saiddistances corresponding to the width of the grooves. The

, face of each of the kdisks has a center hole 10, and around this holeis formed a circular depression, or dish, leading into the curvedgrooves 9. The disks are each mounted on the upper end of a hollowvertical shaft 12, supported on ball bearings mounted on the base plate5. These shafts 12 are further supported by block bearings 13 supportedin the bed plate; and these blocks 13 are Specification of LettersPatent.

`Application ledecember 9, 1909.

VPatented Apr. 11, 1911. SerialNo. 532,173.

bearing supports for the `driving axles 14, upon which are mounted thedriving pulleys 15, and bevel gears 16, 'which mesh into the bevel gears17 mounted Ion the ihollow vertical shafts 12. This mechanism revolvesthe disks -6 and T in the direction of the arrows, Fig. 2.

Over the revolving disks G Tis suspended the material 18 to be cut ordressed, said material may consist of astone of anycharacter. The stoneis suspended from the traveling carriage 19 by grappling arms 22, whichare suitably connected to the saidoarriage, and `made adjustable inorder to -ad just the stone above the disks for regulating the distance,said distance should be .however suiiicient to allow the chilled shot,the cutting material, to `pass under the stone and effect the requiredcutting action. The carriage travels lbackward and forward on the toprail 21, of the frame, `upon the grooved wheels 20 mounted on saidcarriage, see Figs. 1 2. The carriage is moved back and forth by theworm shaft '23, mounted on frame and suitably Yoperated automatically.To prevent the chilled shot being centrifugally thrown off therevolvingdisks 0 7 I use the retaining rim or fender 24 intended to rest on thesaid disks at or near their outer edges, see Figs. 1 2 and 3. The edgeof this rim-fender is preferably inclined inward, see Figs. 4 5, 4butunder certain conditions, this edge is inclined outward, see' Fig. 7, orperpendicular, see Fig. 6. The rim V24 is secured to the joining pieces25 `which fill in the spaces between the 4centers `lifting bodily oill`the same. As the :faces of the disks wear `down incutting :the stonethe rim must conform thereto; and I elnploy any suitable means toadjustably regulate the restingfof the rim on the disks that willconform `to `th-e 'wearing away of the said disks. The rim on theinside, at point 28, has secured to it the curved deflecting rim 29, theouter ends thereof being so curved 4that it kwill throw the chilled shottoward the center of the disks. At 31 the inside of the rim 24, hassecured to it the directing shield 32 serving to throw the cuttingmaterial or chilled shot toward and under the stone. Both the deflectingrim 29, and the directing shield 32 have their .rim edges inclinedinwardly. Now as the cutting material, or chilled shot, reaches thedisks, either by hydraulic pressure forcing the shot up through thehollow vertical shaft 12, or by means of tubes directing it from abovethe disks down on the same; it will be forcibly carried under the stoneand retained upon the disks by the curved detlecting rim 29 and shield32, and also by that portion 83 of the directing rim 24. No occasion cannow arise for the said cutting material being centrifugally forced o thedisks/in their revolutions until it has produced its work and becomereduced to uselessness, in which state it will be carried off by thewater usually used with the chilled shot in these machines.

\ As the cutting material is thrown against the shield 32, at 34,between the stone and rim, it may have a tendency to bank itself up atthat point, and be prevented from passing under the stone for doingeffective work on same. This objectionable feature I overcome by raisingthe carriage 19, as it travels to and fro on the frame, which liftingaction will also raise the stone suiiiciently to release the pent upcutting material, and allow it to pass under the stone. I raise thecarriage 19 by the wedges 35 mounted on the rails 2l, and as the wheels2() of the carriage mount, the said wedges in either travel they will ofnecessity carry with it the carriage and the stone attached or suspendedtherefrom. It may be advisable under certain conditions to magnetize therevolving disks toV retain the cutting material thereupon. In Fig. 6, Ihave shown a machine having magnetizing disks, and also the abovedescribed mechanical means for retaining the cutting material on thedisks for the purpose of showing how the two can be worked together andin conjunction with each other. I have shown three wedges 35. The centerwedge tends to raise the stone bodily. The two end wedges tend to tiltthe stone when raising same. This is necessary under certain conditions.The rim 24 need not be secured to the deflecting rim 29v and directingshield 32 rigidly. To effect the best result of the rim on the disks,adjustably, the securing points should be pivoted.

l/Vhat I claim is,-

l. In a stone dressing machine consisting of revolving curved grooveddisks, an inwardly inclined retaining rim or fender,

resting upon said disk around the outer edges, an inwardly inclineddeflecting rim, said deflecting rim secured to the inside of saidretaining rim at the point where the disks travel outwardly and 'meansfor supporting said retaining rim in position.

2. In a stone dressing machine comprising revolving curved grooveddisks, an inwardly inclined retaining rim or fender resting on the outeredges of said disk, an inwardly inclined deflecting rim, securedy to theinside of said retaining rim, at a point where the said disks traveloutwardly, a' directing shield secured to` said retaining rim at a pointwhere the said disks travel inwardly, means for supporting and retainingsaid oblong retaining rim.

3. In a stone dressing machine,'comprising a frame, revolving curvedgrooved disks, a traveling carriage, with traveling wheels, supportingthe cutting material over the said disks, means for raising the saidcarriage and stone at the end of said carriage travel, compressingWedges, said wedges mounted on the top rail'of the said frame, and overwhich ride the traveling wheels of the said carriage for eifecting thecarriage Y lift to permit the stone suspended therefrom to rise to allowthe cutting material to pass under said stone.

'4. In a 'stone dressingy machine a retaining rim revolving curvedclosed grooved disks on which the said retaining rim rests andencircling the outer edges thereof, means for holding said rim frommoving laterally upon said disks and means for preventing the said rimlifting bodily off said disks, and means for adjustably conforming saidrim to the wearing down'of the faces of said disks,`and means forsupporting and revolving said disks.

' 5. In a stone dressing machine mechanism for retaining the cuttingmaterial on the revolving disk of said machine, comprising a rim orfender resting cling the said revolving disk, said fender having itsedges inclined outwardly, means for supporting said fender inastationary yielding position on the said disk, and means for revolvingsaid disks.

Signed at Brooklyn in the county of Kings and State of New York this 6thday December A. D. 1909. v

EDWARD CLLINS.

Witnesses:

ELIZABETH COLLINS, MICHAEL N. DELAGI.

Copies of this patent may 'be obtained for Vve cents each, by addressingthe Washington, D. C.

a Y Commissioner of Patents',

and encirf

